RYACX
Inverse NASDAQ-100 Strategy Fund
Rydex Series Funds
Index fund
Expense ratio1
2.48%
Net assets2
$36.07M
Holdings2
16
Category
Taxable Bond
2025 return3
-16.46%

Investment objective & strategy

As of July 29, 2024 · prospectus

Objective. The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Funds current benchmark is the inverse (opposite) of the performance of the NASDAQ-100 Index (the underlying index). The Fund does not seek to achieve its investment objective over a period of time greater than one day.

Strategy. Unlike a traditional index fund, the Funds investment objective is to perform opposite the underlying index, and the Fund generally will not own the securities included in the underlying index. Instead, the Fund employs as its investment strategy a program of engaging in short sales of securities included in the underlying index and investing to a significant extent in derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds ( ETFs), futures contracts, and options on securities, futures contracts, and stock indices. The Advisor expects to rebalance the Fund's positions daily to maintain exposure that is opposite to that of the underlying index. While the Fund may write (sell) and purchase swaps, it expects primarily to … Unlike a traditional index fund, the Funds investment objective is to perform opposite the underlying index, and the Fund generally will not own the securities included in the underlying index. Instead, the Fund employs as its investment strategy a program of engaging in short sales of securities included in the underlying index and investing to a significant extent in derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds ( ETFs), futures contracts, and options on securities, futures contracts, and stock indices. The Advisor expects to rebalance the Fund's positions daily to maintain exposure that is opposite to that of the underlying index. While the Fund may write (sell) and purchase swaps, it expects primarily to write swaps. The Funds investment in derivatives serves as a substitute for directly selling short each of the securities included in the underlying index and produces inverse exposure to the underlying index. Certain of the Funds derivatives investments may be traded in the over-the-counter (OTC) market. The Fund also may invest in American Depositary Receipts (ADRs) to gain inverse exposure to international companies included in the underlying index. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform opposite to the securities of companies included in the underlying index. Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Funds portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Funds exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Funds portfolio. The value of the Funds portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage imposed by the Investment Company Act of 1940, satisfy margin or collateral requirements, or meet redemption requests. The NASDAQ-100 Index is a modified capitalization-weighted index composed of 100 of the largest non-financial companies listed on The Nasdaq Stock Market with capitalizations ranging from $ 10.4 billion to $3.3 trillion as of June 30, 2024. To the extent the Funds underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. As of June 30, 2024, the underlying index components, and thus the Fund's investments, are concentrated ( i.e. , more than 25% of its assets) in securities issued by companies in the Semiconductors & Semiconductor Equipment Industry, a separate industry within the Information Technology Sector. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. Also, while the Funds sector exposure may vary over time, as of June 30, 2024, the Fund has significant exposure to the Communication Services Sector, Consumer Discretionary Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC. On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund. The Fund may invest a portion of its assets, and at times, a substantial portion of its assets, in other short-term fixed-income investment companies advised by the Advisor, or an affiliate of the Advisor, for various purposes, including for liquidity management purposes ( e.g ., to increase yield on liquid investments used to collateralize derivatives positions) or when such investment companies present a more cost-effective investment option than direct investments in the underlying securities. Investments in these investment companies will significantly increase the portfolios exposure to certain other asset categories, including: (i) a broad range of high yield, high risk debt securities rated below the top four long-term rating categories by a nationally recognized statistical rating organization or, if unrated, determined by the Advisor to be of comparable quality (also known as junk bonds); (ii) securities issued by the U.S. government or its agencies and instrumentalities; (iii) collateralized loan obligations (CLOs), other asset-backed securities (including mortgage-backed securities) and similarly structured debt investments; and (iv) other short-term fixed income securities. Such investments will expose the Fund to the risks of these asset categories and increases or decreases in the value of these investments may cause the Fund to deviate from its investment objective.

Top holdings

As of March 31, 2026 · N-PORT
SecurityTickerValue% of fund
U.S. Treasury Bills $5.00M 13.86%
U.S. Treasury Bills 912797TH $4.99M 13.84%
FHLBanks Office of Finance $4.99M 13.84%
ZAR/USD FORWARD N/A $3.24M 8.98%
ZAR/USD FORWARD N/A $2.94M 8.16%
U.S. Treasury Bills B $2.48M 6.88%
FHLBanks Office of Finance $2.00M 5.54%
Federal Home Loan Bank (FHLB) $1.99M 5.52%
U.S. Treasury Bills $1.99M 5.52%
FED HOME LN DISCOUNT NT DISCOUNT NOT 04/26 0.00000 $1.50M 4.15%
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Allocation by sector

As of March 31, 2026 · N-PORT
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Portfolio moves

Dec 31, 2025 → Mar 31, 2026
Opened
13
Exited
11
Increased
2
Decreased
1
Unchanged
1

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

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Similar funds

Funds whose portfolios most overlap this one, by weight
FundOverlapNet exp.
Inverse S&P 500 Strategy Fund · RYURX, RYARX, RYUCX, RYUHX 59% 1.44%
Russell 2000 2x Strategy Fund · RYRUX, RYRLX, RYRSX 47% 1.84%
Commodities Strategy Fund · RYMBX, RYMEX, RYMJX 40% 1.65%
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Advisers

As of March 31, 2025 · N-CEN
FirmRole
Security Investors, LLC Adviser

Footnotes

  1. Expense ratio as of July 29, 2024, from the fund's prospectus.
  2. Net assets and holdings count as of March 31, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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